“This calls for a mind with wisdom: the seven heads are seven mountains on which the woman is seated” Revelation 17:9 ->me: Revelation 13:18 also uses this same requirement for understanding “This calls for wisdom: let him who has understanding reckon the number of the beast, for it is a human number, its number is six hundred and sixty-six”. Putting this together with “Keep awake” in Rev. 3:2, 3:3, and 16:15; it is a call to how we should live in these last days. God is the Giver of wisdom and the start of that wisdom begins with fearing God -> The reverent and worshipful fear of the Lord brings instruction in Wisdom (Proverbs 15:33). I must remain alert and awake, not going into the sleepy dream state of this world around me. Even though I operate in this world I must live every moment awake in the Lord. With a reverential and worship filled heart I must fear the Lord (fear disappointing him, fear of looking bad before Him, fear of losing my time with Him). It is through living in this way that the wisdom required here, is possible. I am reading a lot of commentaries and petitioning the Lord for understanding but I can rest without fear or worry knowing He is in control regardless of whether I understand the things in Revelation or not.